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Boundary Conditions

Header

Description

Column Type

Can set if the column is a uniaxial or biaxial column

Top Connection

Sets the top of the column to be a free end condition (none), pinned against lateral translation, fixed against translation and rotation, or partially fixed with a spring stiffness.

Bottom Connection

Sets the bottom of the column to be a free end condition (none), pinned against lateral translation, fixed against translation and rotation, or partially fixed with a spring stiffness.

Restraint(s)

All restraints above the bottom most restraint are assumed be unrestrained in the vertical (Y) direction.

Header

Description

Add Restraint

The user may select between pinned, fixed, vertical roller, or nothing for the bottom most node.  Typically the bottom connection for a precast panel is modeled as a pin (fixed against translation but not rotation). 

Remove Restraint

While you could add a floor tie in the restraint table, using this option flags this restraint as the ‘floor restraint’.  This exposes additional options for when the floor tie is cast.

Copy Restraint

Incremented number assigned to the restraint for identification in the model.

Elevation

Height or vertical position of the restraint.

Front/Back

Sets the restraint to function in the y direction.

Left/Right

Sets the restraint to function in the x direction.

Type

Can set the restraint to be a pin or a spring with a user defined spring stiffness.

Delta x/y

Defines the deflection at the restraint, if pinned. Can be used to model story drift.

Releases

Can add moment releases at this section. These are often used to model joints between two panels.

Header

Description

ID

Incremented number assigned to the release for identification in the model.

Elevation

Height or vertical position of the release.

Loading

Header

Description

Live Load Scale Factor

An additional multiplier to be applied to all live load. Can be used to model live load reduction from ASCE 7.

Load locations input as…

offset from face / centerline: Loads will be input relative to a selected face on the member. Offsets from the face’s centerline may also be input. Eccentricity will be computed based on the given offsets.

eccentricity: Eccentricity in the x and y direction will be input directly by the user.

Vertical Loads

Lateral Loads

Point Moments

Wind Loads

Additional Weight

Input

Description

Start from Bottom

The start location of the load measured from the bottom of the column.

End from Top

The end location of the load measured from the top of the column.

Magnitude

The magnitude of the additional self weight.

Seismic Load

Percent of dead load to be added as lateral seismic load

A percentage of the dead load (per unit length) to be applied laterally as a seismic load. For uni-axial members seismic loads are applied in the ±Y direction. For bi-axial members seismic loads are applied in both the ±Y and ±X directions.

Analysis Section

The user can select between the Entire section and a sub-section to be used in the analysis.  The entire section is the one defined on the Concrete Extents tab.  The sub-section must be defined here.

Bounds

Input

Description

from Left

Distance from the left face of the typical section to the boundary of the input sub-section.

from Front

Distance from the front face of the typical section to the boundary of the input sub-section.

front Right

Distance from the right face of the typical section to the boundary of the input sub-section.

front Back

Distance from the back face of the typical section to the boundary of the input sub-section.

Options

Input

Description

for self weight

If this option is selected, the geometry of the sub-section will be used for the in-place analysis, and the self-weight of the entire section will be applied.

for loading centroid and faces

If this option is selected, the loading eccentricities will be measured from the centroid of the entire section, rather than the centroid of the sub-section.

until first opening

Will ignore sub section inputs from the bottom of the column to the bottom of the first opening.

 

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